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Thread: CD grows Dutch Passion, Mokum's Tulip

  1. #221

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    Quote Originally Posted by Trex View Post
    Oh we aint supposed to put ph meters in low e.c water like r.o and distilled cd . It fucks the probes up milwaukee told me .



    Sent from my SM-G950W using Tapatalk
    Really! First I heard this. Glad I learned it before the new Milwaukee arrived. Now I am tempted to get another HM just to compare without ever touching RO (until after all nutes added)

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  3. #222

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    Quote Originally Posted by Trex View Post
    Oh we aint supposed to put ph meters in low e.c water like r.o and distilled cd . It fucks the probes up milwaukee told me .



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    Any thoughts on storage. In a shot glass with solution acceptable? Cleaned first of course.

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  5. #223

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    Quote Originally Posted by CityDweller View Post
    Any thoughts on storage. In a shot glass with solution acceptable? Cleaned first of course.
    I use mine so much i dont need to store it really . Even when not in use for months . I just leave em in a cool dark place . Fire it up .calibrate it and voila .
    In 5 yrs ive burned one of them cheap milwaukee ph600 .

    Sent from my SM-G950W using Tapatalk

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  7. #224

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    Quote Originally Posted by Trex View Post
    I use mine so much i dont need to store it really . Even when not in use for months . I just leave em in a cool dark place . Fire it up .calibrate it and voila .
    In 5 yrs ive burned one of them cheap milwaukee ph600 .

    Sent from my SM-G950W using Tapatalk
    How often do you calibrate? I was told calibration reduces life. Any idea if this is true?

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  9. #225

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    I found that cleaning a ph pen in luke warm water with a little washing up liquid often brings them back to working correctly. i give it a swish round every now and then whilst leaving it to stand in the soapy water for 12-24hrs. Then i rinse it off calibrate with buffer 7 and 4 and its good to go again. Yeh and never store your pen in RO or distilled water it damages the probe.

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  11. #226

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    Quote Originally Posted by kbag View Post
    I found that cleaning a ph pen in luke warm water with a little washing up liquid often brings them back to working correctly. i give it a swish round every now and then whilst leaving it to stand in the soapy water for 12-24hrs. Then i rinse it off calibrate with buffer 7 and 4 and its good to go again. Yeh and never store your pen in RO or distilled water it damages the probe.
    I will give that a shot.
    I have been storing them in storage solution. Only been washing them in RO.

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  13. #227

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    Even my unfiltered tap water has a 0.0 EC? This is odd since it sometimes comes out brown. Always makes my skin dry and peel. I have filters on almost every tap. Bottled water also.showing 0.0 EC. 2.77 EC solution showing 2.8 on the pen so I think the pen is ok.

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  15. #228

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    Leaves looking slightly more spotted. They look a bit overfed but EC is 0.8 and has not moved since the rez change and buckets added. Should I lower EC?
    Not going to bother with PH again until the milwakee arrives. I have the two HM soaking in bottled water with a bit of soap. I will use the straight tap to rinse them and calibrate all 3 meters before testing them again.

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  17. #229

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    Quote Originally Posted by CityDweller View Post
    That is exactly how I do it. I use RO water to clean well and shake it off good before calibration. 1 day old and already the reading is off by .3
    Calibrated again... 18 hours later off by .1
    Really need better precision with PH. I take back my good review of HM. The newest model is terrible! Hopefully Milwaukee is here tomorrow and has better results.
    Just rinse with tap water, it's closer to the scale of the meter, I have calibrated my probe for 20 years,I calibrate to 4 and 7. My meter is so old that I need to replace it, as the 4 calibration is near the end of my adjustment. It still calibrates fine on 7 so I know I'm close.
    You mentioned spots on leaves, if they get worse and the plants are green, you might want to flush for a day or two.
    How long since you flipped to 12/12
    When did you change to bloom nutes?
    What is the Rez temp.

    I would cover the black pails to reduce heat, even some white paint.
    Unless you are running a chiller, then it won't matter.



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  19. #230

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    Quote Originally Posted by 420Rancher View Post
    Just rinse with tap water, it's closer to the scale of the meter, I have calibrated my probe for 20 years,I calibrate to 4 and 7. My meter is so old that I need to replace it, as the 4 calibration is near the end of my adjustment. It still calibrates fine on 7 so I know I'm close.
    You mentioned spots on leaves, if they get worse and the plants are green, you might want to flush for a day or two.
    How long since you flipped to 12/12
    When did you change to bloom nutes?
    What is the Rez temp.

    I would cover the black pails to reduce heat, even some white paint.
    Unless you are running a chiller, then it won't matter.



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    When I check the pens in PH 7 they both read 7. When I check the rez one is showing 5.1 and the other is showing 5.6. This was yesterday.

    Temp is showing 22c right now. It might get a little warmer later in the day. I am using hydroguard and have 2 air ducts blowing from AC onto the buckets.

    Flip to 12/12 was 8 days ago. I changed to bloom feed on the last Rez change a few days ago when I added the 2 buckets.

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  21. #231

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    Washed them off after a few hours of soapy water soak and calibrated again. This time readings are very close. I will raise PH up to 5.8.

    EC pen is showing 2.4 degrees cooler. Not sure which is right on the temp.

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  23. #232

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    Quote Originally Posted by CityDweller View Post
    Washed them off after a few hours of soapy water soak and calibrated again. This time readings are very close. I will raise PH up to 5.8.

    EC pen is showing 2.4 degrees cooler. Not sure which is right on the temp.
    I never trust a meter, and use them as a guide. Read the plants. 22 isnt bad but I would still do something to reflected light.
    If you can find a piece of this, it works wonders and it's easy to move out of the way to work on the garden, cut to size.
    It's kinda what I done last year to combat the heat without a chiller. The air conditioner worked well and was more efficient with the upper and lower seperation with foam.


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    Quote Originally Posted by 420Rancher View Post
    I never trust a meter, and use them as a guide. Read the plants. 22 isnt bad but I would still do something to reflected light.
    If you can find a piece of this, it works wonders and it's easy to move out of the way to work on the garden, cut to size.
    It's kinda what I done last year to combat the heat without a chiller. The air conditioner worked well and was more efficient with the upper and lower seperation with foam.


    Sent from my iPad using Tapatalk
    I have some sheets of plain white styrofoam put away. Got a delivery and could not bring myself to trash it. Such a waste. I hate touching the stuff. Makes my skin crawl. I'll grab a knife and go cut a piece or two to size. I think it was only about half inch thick so maybe 3 pieces glued together. Keeping the cold air down low makes sense. Thanks 420rancher, you have been tons of help!
    Last edited by CityDweller; 12-06-19 at 12:25 PM.

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  27. #234

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    Foam in place. Once again both pens reading 7.0 in 7. In Rez (after 2ml up) New pen reading 5.8 old pen reading 5.5
    Going to stop here. Hopefully new pen gets delivered today.

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  29. #235

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    Quote Originally Posted by CityDweller View Post
    Foam in place. Once again both pens reading 7.0 in 7. In Rez (after 2ml up) New pen reading 5.8 old pen reading 5.5
    Going to stop here. Hopefully new pen gets delivered today.
    Yea thats a fuckeroo man . Wait til new pen comes in and chexk em side by side . Trash the crap one . I have two three of each now lol and when i doubt i put them all side by side ...

    Have you tried wiping the bulb on the old one . Some soft toilet paper with water i do once in a while .

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  31. #236

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    Quote Originally Posted by Trex View Post
    Yea thats a fuckeroo man . Wait til new pen comes in and chexk em side by side . Trash the crap one . I have two three of each now lol and when i doubt i put them all side by side ...

    Have you tried wiping the bulb on the old one . Some soft toilet paper with water i do once in a while .

    Sent from my SM-G950W using Tapatalk
    Washed in soap. Wrinsed well in tap and wiped with paper. Your advice is solid. Gotta have multiple pens to compare and keep out the pens that go out.
    I need to research laboratory grade pens. I don't mind saving for good equipment that can last.

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  33. #237

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    Was worth a try CD there would be just one more thing i would do before binning it and that is to shake it vigorously like you would a bottle of nutes. On occasions they get air bubbles in the glass bowl Apera Instruments actually tell you to do this in the user manual.

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  35. #238

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    Quote Originally Posted by CityDweller View Post
    Washed in soap. Wrinsed well in tap and wiped with paper. Your advice is solid. Gotta have multiple pens to compare and keep out the pens that go out.
    I need to research laboratory grade pens. I don't mind saving for good equipment that can last.
    They are just as bad CD . Ive had the big lab ones . The probes go on them just as fast . The cost of the probes are just as much as a pen .

    I worked in water treatement and we were better off with the pens maintenance and cost wise .

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  37. #239

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    Quote Originally Posted by Trex View Post
    They are just as bad CD . Ive had the big lab ones . The probes go on them just as fast . The cost of the probes are just as much as a pen .

    I worked in water treatement and we were better off with the pens maintenance and cost wise .

    Sent from my SM-G950W using Tapatalk
    Good to know. Thanks Trex.

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  39. #240

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    Milwakee 5.5
    New HM 5.7
    Old HM 5.3

    All reading 7 in the 7.

    I will follow the Milwaukee and raise PH a bit more to 5.8

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